add test_app as package

Author: Pederzh

package.json

@@ -4,7 +4,8 @@
   "private": true,
   "type": "module",
   "workspaces": [
-    "packages/*"
+    "packages/*",
+    "test_app"
   ],
   "scripts": {
     "build": "pnpm run -r build",

test_app/package.json

@@ -27,6 +27,10 @@
     "express": "^4.18.0",
     "mcp-use": "workspace:*"
   },
+  "private": true,
+  "publishConfig": {
+    "access": "restricted"
+  },
   "devDependencies": {
     "@mcp-use/cli": "workspace:*",
     "@types/cors": "^2.8.0",